A core-drawing sintering mold for a filter member

Abstract

The utility model relates to powder metallurgy technical field discloses a kind of core-pulling sintering mould of filter component, including upper die and lower die, the upper die is installed in the lower die top, the upper die and the lower die both ends are equipped with back cover and front cover, the upper die and the lower die both sides are fixedly connected with fixed link, the inner core is installed between the upper die and the lower die, positioning assembly is arranged between the inner core, and the fixed assembly is installed in the lower die outside;The positioning assembly includes slider, the slider is fixedly connected in the inner core outside, and the inner core other side is equipped with sliding slot. In the utility model, by the cooperation of slider and sliding slot, the structure that square bar and circular bar are respectively clamped in front cover and back cover is combined, effectively ensure that inner core axial centering and transverse stability in core-pulling process, avoid green compact damage and mould damage, improve the precision of mould in complex forming process.

Description

Technical Field

[0001] This utility model relates to the field of powder metallurgy technology, and in particular to a core-pulling sintering mold for a filter component. Background Technology

[0002] Powder metallurgy is an advanced manufacturing technology that uses metal or non-metal powders as raw materials to manufacture metal materials, composite materials and various products through processes such as forming and sintering. It is known as a "green, near-net-shape forming" technology and is an important branch of modern materials science and engineering. Powder metallurgy has high material utilization rate, low material waste, and can also save or reduce subsequent machining and reduce energy consumption.

[0003] Core-pulling sintering molds are mainly used to press powder metallurgy parts with complex internal structures (such as internal holes, internal threads, side holes, multi-step holes, or internal cavities). After pressing and before demolding, the movable core rod for forming is smoothly pulled out from the green blank by a mechanical or hydraulic mechanism, thereby eliminating demolding obstacles, achieving near-net-shape forming of complex internal shapes, avoiding a large amount of subsequent machining, and improving production efficiency and part precision.

[0004] However, in existing molds, there is no structure to connect and fix different inner cores to each other, which may cause misalignment between different inner cores, affecting the final molding of the product. In addition, the mold ends are fixed with screws, which is inconvenient to disassemble, clean and maintain, and is time-consuming. To solve the above problems, a core-pulling sintering mold for filter components is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a core-pulling sintering mold for filter components, which aims to improve the problems of unstable inner cores, affecting product shape and inconvenient maintenance in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A core-pulling sintering mold for a filter component includes an upper mold and a lower mold. The upper mold is installed on top of the lower mold. A rear cover and a front cover are installed at both ends of the upper mold and the lower mold. Fixing rods are fixedly connected to both sides of the upper mold and the lower mold. An inner core is installed between the upper mold and the lower mold. A positioning component is provided between the inner cores. A fixing component is installed on the outside of the lower mold.

[0008] The positioning component includes a slider, which is fixedly connected to the outside of the inner core. A groove is provided on the other side of the inner core. A square rod is fixedly connected to one end of the inner core, and a round rod is fixedly connected to the other end of the inner core. The round rod is slidably connected inside the rear cover, and the square rod is snapped into the inside of the front cover.

[0009] As a further description of the above technical solution:

[0010] The fixing component includes a fixing block, which is fixedly connected to the outside of the lower mold. A rotating rod is rotatably connected to the inside of the fixing block. A rotating handle is threaded to the end of the rotating rod away from the fixing block. A fixing nut is fixedly connected to the outside of the rotating handle. Locking blocks are fixedly connected to both sides of the front cover. The rotating rod is locked to the locking blocks. A groove is provided on the outside of the locking blocks, and the rotating rod is located inside the groove.

[0011] As a further description of the above technical solution:

[0012] The lower mold has multiple limiting blocks fixedly connected to its top, and the upper mold has multiple limiting holes at its bottom, with the limiting blocks inserted into the limiting holes.

[0013] As a further description of the above technical solution:

[0014] The upper mold and the lower mold are fixedly connected at one end by a plurality of fixing screws, and the rear cover is fixedly connected to the ends of the upper mold and the lower mold by the fixing screws;

[0015] As a further description of the above technical solution:

[0016] Both the upper mold and the lower mold have mounting holes inside.

[0017] As a further description of the above technical solution:

[0018] The rear cover has a circular hole inside, and the circular rod is slidably connected inside the circular hole.

[0019] As a further description of the above technical solution:

[0020] A positioning block is fixedly connected to the inner side of the front cover. Positioning holes are opened on the outer sides of the upper mold and the lower mold. The positioning block is engaged in the positioning hole.

[0021] As a further description of the above technical solution:

[0022] A square hole is provided in the center of the front cover, and the square rod is located inside the square hole.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, by using the slider and the groove in the positioning component to cooperate, and combining the square rod and the round rod to be respectively engaged with the front cover and the rear cover, the axial centering and lateral stability of the inner core during the core pulling process are effectively ensured, avoiding damage to the green blank or the mold due to offset or jamming, and improving the stability and accuracy of the mold in the complex molding process.

[0025] 2. In this utility model, the fixing component achieves adjustable fastening between the mold and the front cover through the linkage adjustment of the rotating rod, the rotating handle and the locking block. It not only adapts to the installation requirements under different working conditions, but also compensates for the gap caused by wear during long-term use. It is convenient to fine-tune the locking degree of the mold according to actual needs, adapt to different material properties and process parameters, and improve the operating efficiency and maintenance convenience. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a core-pulling sintering mold for a filter component proposed in this utility model.

[0027] Figure 2 This is a schematic diagram of the inner core of a core-pulling sintering mold for a filter component proposed in this utility model.

[0028] Figure 3 This is a schematic diagram of the limiting block of a core-pulling sintering mold for a filter component proposed in this utility model.

[0029] Figure 4 This is a schematic diagram of the limiting groove of a core-pulling sintering mold for a filter component proposed in this utility model.

[0030] Figure 5 This is a schematic diagram of the sliding groove of a core-pulling sintering mold for a filter component proposed in this utility model.

[0031] Figure 6 This is a schematic diagram of the positioning block of a core-pulling sintering mold for a filter component proposed in this utility model.

[0032] Legend:

[0033] 1. Upper mold; 2. Lower mold; 3. Rear cover; 4. Front cover; 5. Fixing rod; 6. Fixing block; 7. Rotating rod; 8. Rotating handle; 9. Fixing nut; 10. Square rod; 11. Circular hole; 12. Fixing screw; 13. Limiting block; 14. Locking block; 15. Inner core; 16. Circular rod; 17. Groove; 18. Positioning block; 19. Slide groove; 20. Sliding block; 21. Mounting hole; 22. Positioning hole; 23. Limiting hole; 24. Square hole. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figure 2 , Figure 4 , Figure 5 and Figure 6 The present invention provides an embodiment of a core-pulling sintering mold for a filter component, comprising an upper mold 1 and a lower mold 2. The upper mold 1 is installed on top of the lower mold 2 and is connected to the lower mold 2 by a fixing screw 12. The upper mold 1 and the lower mold 2 are equipped with a rear cover 3 and a front cover 4 at both ends to form a stable frame structure. Fixing rods 5 are fixedly connected to both sides of the upper mold 1 and the lower mold 2 to facilitate hoisting and moving of the mold. An inner core 15 is installed between the upper mold 1 and the lower mold 2 to form a complete core-pulling mold. A positioning component is provided between the inner cores 15 to realize the axial positioning and guidance of the inner cores 15. A fixing component is installed on the outside of the lower mold 2.

[0036] The positioning assembly includes a slider 20, which is fixedly connected to the outside of the inner core 15. A groove 19 is formed on the other side of the inner core 15. A slider 20 on one side of one inner core 15 slidably connects to the groove 19 on the other side of another inner core 15. Multiple inner cores 15 are interconnected via the slider 20 and the groove 19, fixing the inner cores 15 and preventing unevenness between them from affecting product quality. A square rod 10 is fixedly connected to one end of each inner core 15, and a round rod 16 is fixedly connected to the other end. The round rod 16 slides... The inner core 15 is connected to the inside of the rear cover 3 and the square rod 10 is snapped into the inside of the front cover 4. The inner core 15 is fixed between the front cover 4 and the rear cover 3 by the round rods 16 and the square rod 10 at both ends to ensure the stability of the inner core 15 during the core pulling process. The rear cover 3 has a round hole 11 inside, and the round rod 16 is slidably connected inside the round hole 11. The front cover 4 has a square hole 24 in the middle, and the square rod 10 is located inside the square hole 24. The round hole 11 and the square hole 24 cooperate with the round rod 16 and the square rod 10 to fix the inner core 15.

[0037] Reference Figures 1-3The fixing components include a fixing block 6, which is fixedly connected to the outside of the lower mold 2. Two fixing components are respectively fixed to both sides of the lower mold 2. A rotating rod 7 is rotatably connected to the inside of the fixing block 6. The rotating rod 7 rotates with the support of the fixing block 6. A handle 8 is threadedly connected to the end of the rotating rod 7 away from the fixing block 6. A fixing plate is provided on the side of the handle 8 away from the fixing nut 9. Rotating the handle 8 can move the fixing plate on the rotating rod 7. A fixing nut 9 is fixedly connected to the outside of the handle 8. The fixing nut 9 can also be tightened by turning it with a wrench. Locking blocks 1 are fixedly connected to both sides of the front cover 4. 4. The rotating rod 7 is engaged with the locking block 14. The locking block 14 has a groove 17 on its outer side. The rotating rod 7 is located inside the groove 17. The rotating rod 7 rotates along the fixing block 6. When the rotating rod 7 moves into the groove 17, the rotating handle 8 is rotated and driven to move through the thread on the rotating rod 7, and is locked with the locking block 14, thus fixing the front cover 4. The positioning block 18 is fixedly connected to the inner side of the front cover 4. The upper mold 1 and the lower mold 2 have positioning holes 22 on their outer sides. The positioning block 18 is engaged in the positioning hole 22. By engaging the positioning block 18 in the positioning hole 22, the accurate positioning during mold assembly is ensured.

[0038] Reference Figures 2-4 The lower mold 2 has multiple limiting blocks 13 fixedly connected to its top, and the upper mold 1 has multiple limiting holes 23 at its bottom. The limiting blocks 13 are inserted into the limiting holes 23. The cooperation between the limiting blocks 13 and the limiting holes 23 can enhance the centering of the upper and lower molds when they are closed. The upper mold 1 and the lower mold 2 are fixedly connected to one end with multiple fixing screws 12. The rear cover 3 is fixedly connected to the ends of the upper mold 1 and the lower mold 2 through the fixing screws 12. The rear cover 3 is connected to the mold body through the fixing screws 12 to ensure the stability of the entire mold system. The upper mold 1 and the lower mold 2 are both provided with mounting holes 21. The upper mold 1 and the lower mold 2 are fixed by cooperating with the fixing screws 12 through the mounting holes 21.

[0039] Working principle: First, place the lower mold 2 on the workbench. Align the upper mold 1 with the lower mold 2 through the insertion relationship between the limiting block 13 and the limiting hole 23, and fix it by passing the fixing screw 12 through the mounting hole 21. Then, fix the rear cover 3 to the end of the mold through other fixing screws 12. Then, slide the inner core 15 into the groove 19 on the side of another inner core 15 through the slider 20 on one side. After fixing multiple inner cores 15, they can be placed into the mold. Slide the inner core 15 into the circular hole 11 of the rear cover 3 through the circular rod 16, and the raw material can be added into the mold. After the raw material is added, align the square hole 24 of the front cover 4 with the square rod 10, and insert the square rod 10 into the square hole 24 of the front cover 4. Double-point positioning ensures the axial stability of the inner core 15. At the same time, insert multiple positioning blocks 18 on the inside of the front cover 4 into the positioning holes 22 at the ends of the upper and lower molds 2 to fix the front cover 4.

[0040] Next, rotate the rotating rod 7 to the position inside the groove 17, and then rotate the handle 8 to move the handle 8 on the rotating rod 7 and engage it in the locking block 14. Continue to rotate to fix it. If you feel that manual rotation is not tight enough, you can also use a wrench to rotate the fixing nut 9 to lock it, so as to secure the front cover 4 to the mold body.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A core-pulling sintering mold for a filter element, comprising an upper mold (1) and a lower mold (2), characterized in that: The upper mold (1) is installed on the top of the lower mold (2). The upper mold (1) and the lower mold (2) are equipped with a rear cover (3) and a front cover (4) at both ends. The upper mold (1) and the lower mold (2) are fixedly connected with fixing rods (5) on both sides. An inner core (15) is installed between the upper mold (1) and the lower mold (2). A positioning component is provided between the inner cores (15). A fixing component is installed on the outside of the lower mold (2). The positioning component includes a slider (20), which is fixedly connected to the outside of the inner core (15). A groove (19) is provided on the other side of the inner core (15). A square rod (10) is fixedly connected to one end of the inner core (15), and a round rod (16) is fixedly connected to the other end of the inner core (15). The round rod (16) is slidably connected inside the rear cover (3), and the square rod (10) is snapped into the inside of the front cover (4).

2. The core-pulling sintering mold for a filter component according to claim 1, characterized in that: The fixing component includes a fixing block (6), which is fixedly connected to the outside of the lower mold (2). A rotating rod (7) is rotatably connected to the inside of the fixing block (6). A handle (8) is threadedly connected to one end of the rotating rod (7) away from the fixing block (6). A fixing nut (9) is fixedly connected to the outside of the handle (8). A locking block (14) is fixedly connected to both sides of the front cover (4). The rotating rod (7) is engaged with the locking block (14). A groove (17) is provided on the outside of the locking block (14). The rotating rod (7) is located inside the groove (17).

3. The core-pulling sintering mold for a filter component according to claim 1, characterized in that: The lower mold (2) has multiple limiting blocks (13) fixedly connected to its top, and the upper mold (1) has multiple limiting holes (23) at its bottom. The limiting blocks (13) are inserted into the limiting holes (23).

4. The core-pulling sintering mold for a filter component according to claim 1, characterized in that: The upper mold (1) and the lower mold (2) are fixedly connected at one end by a plurality of fixing screws (12), and the rear cover (3) is fixedly connected to the ends of the upper mold (1) and the lower mold (2) by the fixing screws (12).

5. The core-pulling sintering mold for a filter component according to claim 4, characterized in that: Both the upper mold (1) and the lower mold (2) have mounting holes (21) inside.

6. The core-pulling sintering mold for a filter component according to claim 1, characterized in that: The rear cover (3) has a circular hole (11) inside, and the circular rod (16) is slidably connected inside the circular hole (11).

7. The core-pulling sintering mold for a filter component according to claim 2, characterized in that: A positioning block (18) is fixedly connected to the inner side of the front cover (4). Positioning holes (22) are opened on the outer sides of the upper mold (1) and the lower mold (2). The positioning block (18) is engaged in the positioning hole (22).

8. The core-pulling sintering mold for a filter component according to claim 6, characterized in that: The front cover (4) has a square hole (24) in the middle, and the square rod (10) is located inside the square hole (24).

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